2663838391039 has 16 divisors (see below), whose sum is σ = 3228009004800. Its totient is φ = 2147327699904.

The previous prime is 2663838391013. The next prime is 2663838391061. The reversal of 2663838391039 is 9301938383662.

It is a cyclic number.

It is not a de Polignac number, because 2663838391039 - 2¹⁵ = 2663838358271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663838391079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73079809 + ... + 73116250.

It is an arithmetic number, because the mean of its divisors is an integer number (201750562800).

Almost surely, 2^{2663838391039} is an apocalyptic number.

2663838391039 is a deficient number, since it is larger than the sum of its proper divisors (564170613761).

2663838391039 is a wasteful number, since it uses less digits than its factorization.

2663838391039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146196222.

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 2663838391039 in words is "two trillion, six hundred sixty-three billion, eight hundred thirty-eight million, three hundred ninety-one thousand, thirty-nine".